or you can just use something like this.
I am lookingto build a small numeric keypad to control a relay to disable the starter circuit on the car.
I guess what I am looking to build is something like what was used on the cars in transporter I and II if anyone remembers this.
Would it be possible to use a cut down keyboad from an old laptop or something similar? i would like to fit it in the ashtray of my car (about 3x5 inches). I have an old PDA with a touchscreen that is pretty much useless now (badly out of date, slow and dead battery), could this be adapted to make a touchscreen keypad?
The problem I can't seem to wrap my mind around is how to make a controller that would accept a code like 2-5-1-4 and output a signal to a relay to energize. Maybe I could use the keypad and controler that the older ford crown victorias have on the doors to unlock the doors with the punch in code?
Anyone have any ideas?
didnt even notice that they discontinued it. let me see if i can find somethin else
yup. here ya go
funny how i was trying to do the samething ur doin.
yeah i am going to get one as well. i always wanted to do that. kinda rediculous but who cares.
there away to to make this PC compatible. For instance havint to input a code into the computer, and having a usb cable hooked up to the started to let current through? plausible?
somehow I don't think I'd feel comfortable trusting my carputer to the point where if it didn't boot or run properly, I'd be unable to start my car...
not to mention, you'd HAVE to run your carPC every time you wanted to go anywhere, and you'd have to wait for it to boot before you could start your car. Sure, you could have some sort of bypass for this, but making the carPC code security system be easily bypassed kind of defeats the purpose... I think it's definitely more of a job for a standalone, dedicated device that's more reliable.
But don't take it from me! here's a quote from a real, live newbie:
eegeek.netOriginally Posted by Viscouse
yeah, in all honest, you do NOT want to trust your carputer to something like this. What if, God forbid, your carPC fries or gets stolen?
Seperate module is a definite neccessity
Carputer Progress: Here we go again...
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Join the fight against carputters. EMAIL ME!
yeah i'd never trust my carputer to turn on and turn off my car. that's a separate module. its not part of any computer. all it is, is a keypad switch and a relay. the rest is wiring it up. so its completely seperate. and if u think that might fail then put a switch in it so u can disable or enable it. i know what your thinking...that defeats the purpose...well not unless your the only one who knows where that switch is secretly mounted somewhere in your car. so incase anything were to happen you just flip the switch and turn your car on like you normally do.
Rat shack has something similar to that.. Ive played with it before for another project.. On the back its got +12v and GND. You program the code, and once you enter the code, it just activated like a switch.